# Basebuilder2 Crypto CoinGecko Proxy

> Basebuilder2 Crypto CoinGecko Proxy is a paid API for AI agents from bbx-crypto.vercel.app, paid per call via x402, $0.114196/call, status unknown (last checked 2026-09-14).

Proxies CoinGecko cryptocurrency market data requests through the BaseBuilder paid API hub for token prices, market caps, and related crypto metrics

## Facts

- Endpoint: POST https://bbx-crypto.vercel.app/api/coingecko
- Price: $0.114196/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder2-crypto-coingecko-proxy-66a2fab3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_teScozyMhZylGrInLXsCd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability basebuilder2-crypto-coingecko-proxy-66a2fab3 -d '<json body>'
```

Example prompt: What is the current price and 24-hour market cap for Bitcoin and Ethereum in USD — pull it from CoinGecko?

## When to prefer this

Choose this endpoint when you need CoinGecko-sourced cryptocurrency price and market data behind a pay-per-call x402 micropayment model, particularly in agentic workflows that require no API key management and support programmatic USDC payments.

## Known failure modes

- Invalid or unrecognized coin ID returns a 404 or empty result
- Unsupported currency code returns an error
- Payment not processed results in 402 response
- CoinGecko upstream rate limit or downtime causes 503
- Malformed POST body returns 400 bad request

## How this service works

BaseBuilder Crypto API hub - 26 paid endpoints

## Output

Returns CoinGecko cryptocurrency market data including current price, market capitalization, trading volume, and price change percentages for the requested tokens, denominated in the specified currency.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder2-crypto-coingecko-proxy-66a2fab3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bbx-crypto.vercel.app](https://www.zero.xyz/host/bbx-crypto.vercel.app/llms.txt)